/* Parses the pattern string \p FilenamePat and stores the result to
* lprofcurFilename structure. */
static int parseFilenamePattern(const char *FilenamePat) {
int NumPids = 0, NumHosts = 0, I;
char *PidChars = &lprofCurFilename.PidChars[0];
char *Hostname = &lprofCurFilename.Hostname[0];
int MergingEnabled = 0;
lprofCurFilename.FilenamePat = FilenamePat;
/* Check the filename for "%p", which indicates a pid-substitution. */
for (I = 0; FilenamePat[I]; ++I)
if (FilenamePat[I] == '%') {
if (FilenamePat[++I] == 'p') {
if (!NumPids++) {
if (snprintf(PidChars, MAX_PID_SIZE, "%d", getpid()) <= 0) {
PROF_WARN(
"Unable to parse filename pattern %s. Using the default name.",
FilenamePat);
return -1;
}
}
} else if (FilenamePat[I] == 'h') {
if (!NumHosts++)
if (COMPILER_RT_GETHOSTNAME(Hostname, COMPILER_RT_MAX_HOSTLEN)) {
PROF_WARN(
"Unable to parse filename pattern %s. Using the default name.",
FilenamePat);
return -1;
}
} else if (containsMergeSpecifier(FilenamePat, I)) {
if (MergingEnabled) {
PROF_WARN(
"%%m specifier can only be specified once at the end of %s.\n",
FilenamePat);
return -1;
}
MergingEnabled = 1;
if (FilenamePat[I] == 'm')
lprofCurFilename.MergePoolSize = 1;
else {
lprofCurFilename.MergePoolSize = FilenamePat[I] - '0';
I++; /* advance to 'm' */
}
}
}
lprofCurFilename.NumPids = NumPids;
lprofCurFilename.NumHosts = NumHosts;
return 0;
}
static int setFilenamePossiblyWithPid(const char *Filename) {
#define MAX_PID_SIZE 16
char PidChars[MAX_PID_SIZE] = {0};
int NumPids = 0, PidLength = 0, NumHosts = 0, HostNameLength = 0;
char *Allocated;
int I, J;
char Hostname[COMPILER_RT_MAX_HOSTLEN];
/* Reset filename on NULL, except with env var which is checked by caller. */
if (!Filename) {
resetFilenameToDefault();
return 0;
}
/* Check the filename for "%p", which indicates a pid-substitution. */
for (I = 0; Filename[I]; ++I)
if (Filename[I] == '%') {
if (Filename[++I] == 'p') {
if (!NumPids++) {
PidLength = snprintf(PidChars, MAX_PID_SIZE, "%d", getpid());
if (PidLength <= 0)
return -1;
}
} else if (Filename[I] == 'h') {
if (!NumHosts++)
if (COMPILER_RT_GETHOSTNAME(Hostname, COMPILER_RT_MAX_HOSTLEN))
return -1;
HostNameLength = strlen(Hostname);
}
}
if (!(NumPids || NumHosts)) {
setFilename(Filename, 0);
return 0;
}
/* Allocate enough space for the substituted filename. */
Allocated = malloc(I + NumPids*(PidLength - 2) +
NumHosts*(HostNameLength - 2) + 1);
if (!Allocated)
return -1;
/* Construct the new filename. */
for (I = 0, J = 0; Filename[I]; ++I)
if (Filename[I] == '%') {
if (Filename[++I] == 'p') {
memcpy(Allocated + J, PidChars, PidLength);
J += PidLength;
}
else if (Filename[I] == 'h') {
memcpy(Allocated + J, Hostname, HostNameLength);
J += HostNameLength;
}
/* Drop any unknown substitutions. */
} else
Allocated[J++] = Filename[I];
Allocated[J] = 0;
/* Use the computed name. */
setFilename(Allocated, 1);
return 0;
}
